Ok, so if I was to build one....
First, do I need the stamp(s) before I begin, or do I need a receiver, and have a suppressor paid for, to have a serial numbers to go with the SBR and suppressed stamps?
Next, would I be better off to just do it as a suppressed pistol, with a wrist brace, or am I asking for trouble later, when the feds decide a wrist brace is a stock?
Finally, if I go the build route, Id like to go 7.62x39, on the Hydra platform, but is .300 blackout really that much better for what Im looking to do?
I was going to go over to G3 to ask about this, but figured I can start here, then Ill go check out suppressors.